Question

Two surgical procedures are widely used to treat a certain type of cancer. To compare the success rates of the two​ procedures, random samples of the two types of surgical patients were obtained and the numbers of patients who showed no recurrence of the disease after a​ 1-year period were recorded. The data are shown in the table. How large a sample would be necessary in order to estimate the difference in the true success rates to within 0.10 with​ 95% reliability?

n # of successes

A 100 80

B 100 84

n1=n2=?

A. 192

B. 79

C. 114

D. 57

Answer 1

this is a simple question of normal distribution where we need to use the normal distribution's formula of the difference in proportion and find out sample size.

To emine the somple Mae S.E l o0 6 2 96) e 1)

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